<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think;

\think\Loader::import('controller/Jump', TRAIT_PATH, EXT);

use think\exception\ValidateException;

class Controller{
    use \traits\controller\Jump;

    // 视图类实例
    protected $view;
    // Request实例
    protected $request;
    // 验证失败是否抛出异常
    protected $failException = false;
    // 是否批量验证
    protected $batchValidate = false;

    /**
     * 前置操作方法列表
     * @var array $beforeActionList
     * @access protected
     */
    protected $beforeActionList = [];

    /**
     * 架构函数
     * @param Request $request Request对象
     * @access public
     */
    public function __construct(Request $request = null){
        if(is_null($request)){
            $request = Request::instance();
        }
        $this->view = View::instance(Config::get('template'), Config::get('view_replace_str'));
        $this->request = $request;

        // 控制器初始化
        $this->_initialize();

        // 前置操作方法
        if($this->beforeActionList){
            foreach($this->beforeActionList as $method => $options){
                is_numeric($method) ? $this->beforeAction($options) : $this->beforeAction($method, $options);
            }
        }
    }

    // 初始化
    protected function _initialize(){}

    /**
     * 前置操作
     * @access protected
     * @param string $method  前置操作方法名
     * @param array  $options 调用参数 ['only'=>[...]] 或者['except'=>[...]]
     */
    protected function beforeAction($method, $options = []){
        if(isset($options['only'])){
            if(is_string($options['only'])){
                $options['only'] = explode(',', $options['only']);
            }
            if(!in_array($this->request->action(), $options['only'])){
                return;
            }
        }elseif(isset($options['except'])){
            if(is_string($options['except'])){
                $options['except'] = explode(',', $options['except']);
            }
            if(in_array($this->request->action(), $options['except'])){
                return;
            }
        }

        call_user_func([$this, $method]);
    }

    /**
     * 加载模板输出
     * @access protected
     * @param string $template 模板文件名
     * @param array  $vars     模板输出变量
     * @param array  $replace  模板替换
     * @param array  $config   模板参数
     * @return mixed
     */
    protected function fetch($template = '', $vars = [], $replace = [], $config = []){
        return $this->view->fetch($template, $vars, $replace, $config);
    }

    /**
     * 渲染内容输出
     * @access protected
     * @param string $content 模板内容
     * @param array  $vars    模板输出变量
     * @param array  $replace 替换内容
     * @param array  $config  模板参数
     * @return mixed
     */
    protected function display($content = '', $vars = [], $replace = [], $config = []){
        return $this->view->display($content, $vars, $replace, $config);
    }

    /**
     * 模板变量赋值
     * @access protected
     * @param mixed $name  要显示的模板变量
     * @param mixed $value 变量的值
     * @return void
     */
    protected function assign($name, $value = ''){
        $this->view->assign($name, $value);
    }

    /**
     * 初始化模板引擎
     * @access protected
     * @param array|string $engine 引擎参数
     * @return void
     */
    protected function engine($engine){
        $this->view->engine($engine);
    }

    /**
     * 设置验证失败后是否抛出异常
     * @access protected
     * @param bool $fail 是否抛出异常
     * @return $this
     */
    protected function validateFailException($fail = true){
        $this->failException = $fail;
        return $this;
    }

    /**
     * 验证数据
     * @access protected
     * @param array        $data     数据
     * @param string|array $validate 验证器名或者验证规则数组
     * @param array        $message  提示信息
     * @param bool         $batch    是否批量验证
     * @param mixed        $callback 回调方法（闭包）
     * @return array|string|true
     * @throws ValidateException
     */
    protected function validate($data, $validate, $message = [], $batch = false, $callback = null){
        if(is_array($validate)){
            $v = Loader::validate();
            $v->rule($validate);
        }else{
            if(strpos($validate, '.')){
                // 支持场景
                list($validate, $scene) = explode('.', $validate);
            }
            $v = Loader::validate($validate);
            if(!empty($scene)){
                $v->scene($scene);
            }
        }
        // 是否批量验证
        if($batch || $this->batchValidate){
            $v->batch(true);
        }

        if(is_array($message)){
            $v->message($message);
        }

        if($callback && is_callable($callback)){
            call_user_func_array($callback, [$v, &$data]);
        }

        if(!$v->check($data)){
            if($this->failException){
                throw new ValidateException($v->getError());
            }else{
                return $v->getError();
            }
        }else{
            return true;
        }
    }
}
